watchOS 5.3.8 (build 16U680) is an official Apple over-the-air update for the Apple Watch Series 3 (38mm), released on 2020-07-15T17:28:24Z. The update package is 1.28 GB. This is a full OTA update that can be applied from any compatible base version. This update is no longer signed by Apple, meaning it can no longer be applied on-device through Settings.

Payload file: e5fea78fb79b2f1cfec36c5c8a933b62ec8a2e41.zip.